Transport and storage system for metal coils

Abstract

The invention relates to a transport and storage system for metal coils for receiving, in particular horizontal, cylindrical sheet metal coils, wherein at least a first and a second module (12, 25) are provided, which are each formed from a stack of corrugated cardboard, wherein the tops (1, 4,6) of the corrugated cardboard layers are orientated such that they extend substantially perpendicular to a receiving surface (18, 24) for metal coils of the first module (12), wherein the second module (25) has contact surfaces for contact with the first module and is designed for contact with the transportation means wall, in particular the container wall.

Description

[0001] Transport and storage system for metal coils

[0002] The invention relates to a transport system for metal coils, in particular steel sheet coils.

[0003] Steel or other metal sheets are typically produced by rolling a slab of the corresponding metal material, usually produced by melting and casting the steel material into the slab form, into a flat steel sheet strip or metal sheet strip. For this purpose, a corresponding metal slab passes through a rolling mill with corresponding rolling stands, with the thickness of the slab and later of the sheet decreasing from stand to stand.

[0004] Using sheet steel as an example, this occurs in such a way that the slab, which typically weighs between 20 and 40 tons, is first heated in a pusher-type furnace to ensure that the slab reaches a very high temperature, allowing for deformation. This slab is then first pre-rolled in a reversing roughing stand and, after reaching a target thickness, is passed through a hot rolling mill with a number of hot rolling stands while still red-hot.

[0005] The end result is a hot-rolled strip, the thickness of which can range from a few millimetres up to a few centimetres.

[0006] In order to produce a thin sheet from this hot strip, this hot strip is then rolled out in a cold rolling mill to the target sheet thickness, whereby the target sheet thickness for thin sheet to be used in the automotive industry, for example, is between 0.3 and 1 mm.

[0007] Since the width of these strips is regulated, the thickness change from slab to hot-rolled strip to cold-rolled strip results in the continuous sheet metal strip becoming very long, so that at the end of the rolling process, both the hot-rolled and cold-rolled strip processes, it is wound into coils. The sheet or cold-rolled strip can also be coated after cold rolling. Metallic coatings, such as a hot-dip galvanized coating, are typically applied using the hot-dip process.

[0008] For this purpose, these strips are unwound, passed through a galvanizing process and then rewound.

[0009] Such steel coils can weigh up to the weight of the slab, but multiple coils can also be produced from one slab, so the weight of the coiled coil can typically be between 4 t and 40 t. After any coating process, especially a galvanizing process, the weight of the coil may increase slightly.

[0010] To move such coils, specialized vehicles are used. These vehicles, which use a mandrel to reach through a longitudinal opening along the longitudinal axis of the cylindrical coil, lift the coil, and move it. Such a vehicle is known, for example, from WO2016044891. Such coils should therefore preferably be transported in a horizontal position, as this allows access to the coil eye. In an upright position, the coil eye would point toward the sky, and such access to the coil's longitudinal axis would no longer be possible.

[0011] During all handling or transport operations, it is of course important that the steel coils are not subjected to pressure at specific points, as this would result in deformation of the sheet or damage to the metallic coating layer. Such indentations are known to extend through several layers into the interior of the coil. These areas can therefore no longer be classified as satisfactory and must sometimes be discarded.

[0012] Such coils can, of course, be transported by truck, rail, or ship. Due to the sensitivity of the coil or sheet surface, on the one hand, and the fact that these coils are very heavy and pose a significant hazard when moving, on the other, it is necessary to transport such coils reliably, safely, but also carefully. When transporting heavy loads, especially single-piece loads such as steel coils, particular attention must be paid to load distribution; point loading or excessive axle loads can be problematic during transport. This must be observed particularly in accordance with national and international regulations for freight transport.

[0013] Several attempts have already been made to transport coils, particularly in containers.

[0014] It should be noted that due to the considerable weight of steel coils, only one to a maximum of two steel coils can be loaded per truck or per container and, particularly in the case of seagoing containers, any movement of the steel coil must be prevented, as a moving steel coil weighing 23 t will permanently destroy any outer packaging.

[0015] EP 1 907 309 B1 discloses a storage system in which metal coils are stored in Styrofoam blocks. The Styrofoam block, designed to accommodate the steel coil, has a recess corresponding to the radius of the coil and accommodates a portion of the coil's circumference so large that the steel coil cannot easily escape from this block. When multiple coils are stored, a cuboid block is inserted as a spacer between the coils and between the first and last coil and a corresponding container wall. This is intended to secure the coils in the longitudinal and transverse directions.

[0016] A comparable storage system is known from IN 20 20 23 00 82 61 Al, which, however, is made of different materials, such as pressed paper.

[0017] AT 522 138 Al discloses flexibly adapted support beams that extend through the Styrofoam blocks, as well as a central, continuous Styrofoam support beam. DE 10 2017 113 499 Al discloses a transport guard for coils made of wood, with a thin layer of cardboard between the wood and the coil to prevent indentations in the coil.

[0018] JP2022018243 A2 describes a cardboard plug-in system designed to transport cylindrical bodies. However, this system is unsuitable for steel coils because the plug-in connections are too weak.

[0019] EP 1880899 A1 discloses a corrugated cardboard storage system in which a simple, partially cylindrical support is formed from upright laminated corrugated cardboard sheets, which are additionally coated with plastic layers. Such an arrangement is neither capable of supporting steel coils nor of holding them in place.

[0020] A comparable system is known from WO091399643 A1, in which a corrugated cardboard is supported by an upright supporting structure, also made of corrugated cardboard, with these upright supporting structures connected by sleeves. Such a design is unable to fulfill its function; it is far too unstable.

[0021] JP 2019081614A2 also discloses a plug-in system consisting of plate-like elements for enclosing a coil with a ribbed structure made of corrugated cardboard. Firstly, such a system is not particularly stable, and secondly, it is almost impossible to use it in confined spaces.

[0022] The object of the invention is to create a transport and storage system for metal coils, in particular steel coils, which reliably stores heavy metal coils, in particular those weighing more than 20 t, or can optimally ensure load distribution in a transport or storage system and can be disposed of easily and without problems.

[0023] The problem is solved by a transport and storage system having the features of claim 1. Advantageous further developments are characterized in the dependent subclaims.

[0024] The current state of the art systems has significant disadvantages: on the one hand, the prices for polystyrene blocks have risen considerably, and on the other hand, there are massive problems with disposal or the polystyrene blocks have to be returned, which further increases costs in international maritime trade.

[0025] Particularly in the case of sustainably produced steel such as greentec steel®, it is undesirable for sustainably produced steel to be delivered using non-sustainably produced transport systems.

[0026] Surprisingly, it was discovered that the above requirements can be met with a transport and storage system made of corrugated cardboard.

[0027] In this case, however, the corrugated cardboard is not guided to the transported goods with its broad side, as is the usual purpose, but the orientation of the corrugated cardboard is basically chosen so that the end surfaces, which run transversely to the corrugation, face the transported or stored goods and, in this case, the coil.

[0028] Corrugated board is a pulp product made from paper. At least one smooth and one fluted paper web are glued together to create corrugated board; up to seven in total are possible and common. The defining characteristic of corrugated board is the flute. This gives the lightweight paper its strength by increasing the area moment of inertia. A distinction can be made between different flute types and flute combinations, each of which is more suitable depending on the requirements and application.

[0029] Corrugated cardboard is one of the most common packaging materials and is primarily used for transport packaging, such as folding cartons or slip-lid boxes. The advantage of corrugated cardboard is that it is lightweight and stable. Thanks to its base material, paper, corrugated cardboard packaging can be easily and completely recycled, but also frequently reused. It is now quite common to use so-called heavy-duty corrugated cardboard for cardboard packaging, which is arranged firmly on a Euro pallet, for example, and can also accommodate heavy objects such as automotive parts. With clever folding patterns, such heavy-duty corrugated cardboard boxes can be folded down to a fraction of their volume, recycled, and reused multiple times.

[0030] The flute structure is the most important and decisive feature of corrugated board and gives it its particular stability and strength. The structure is such that, for example, there is a flat inner layer on which a first flute web is arranged, with an intermediate layer on the first flute web and, on this, a second flute web and, following this, an outer layer. This arrangement creates a so-called two-flute structure, whereby the first flute web can have a different flute frequency to the second flute web, which further increases stability. The advantage of the flute is, on the one hand, the considerable increase in stability that three paper webs lying on top of each other would not have, in contrast to an arrangement with an inner paper web, a flute web and an outer paper web.

[0031] As already explained, this is due to the increased area moment of inertia. Since the flute sheet is glued to both the inner and outer sheets at the flute crests, the flute sheet cannot shift. The resulting cavities ensure that corrugated board is very light relative to its volume and also has an insulating effect. In the single-wall corrugated board described above, the outer and inner sheets are glued to the flute sheet. For multi-wall corrugated boards, an intermediate sheet and an additional flute sheet are added.

[0032] Corrugated board is produced in so-called corrugating machines. Paper webs are passed through corrugating rollers and embossed using heat, moisture, and pressure. The shape of the embossed flute resembles a sine wave in cross-section. The flute types differ in their pitch (t) and flute height (h). The distance between two flute supports is the flute pitch (t). The distance between the flute trough and the flute crest is the flute height (h). In the single-flute range, the C-flute (medium flute), B-flute (fine flute), and E-flute (ultrafine or microwave flute) are among the most commonly used flute types. As already mentioned, the different flute types can also vary in the subsequent flutes of a multi-flute composite.

[0033] To give corrugated board greater stability, several layers are glued together. Typical flute combinations for double-wall corrugated board include BC flute, EB flute, or EE flute. For triple-wall corrugated board, ACA, BAA, EBC, or BBC flute combinations are commonly used.

[0034] However, within the meaning of the invention, any other combination of the known wave types is also possible and intended.

[0035] Depending on the demands placed on the shipping packaging, not only the flute combination but also the paper quality for the liner paper and the flute can be selected.

[0036] For liner paper, so-called kraftliner or testliner can be used, while for corrugated paper, so-called semi-cellulose or cellulose paper can be used.

[0037] Single- or double-wall corrugated board is used for shipping lighter shipments. Triple-wall corrugated board offers appropriate protection for heavy and delicate goods and can be used as an alternative to wood systems. Especially during export, a wide variety of climatic conditions prevail, which triple-wall board usually withstands without problems. Surprisingly, it has been shown that, when combined with adhesives, single-wall and especially double-wall corrugated board can prove to be the most suitable solution for the application in terms of the combination of dead weight and load-bearing capacity. Therefore, single- or double-wall corrugated board can be advantageously used as a transport and storage material in the application according to the invention.

[0038] The quality of corrugated board is controlled using various testing systems. The DIN 55468 standard was developed based on the standards of the German Association of the Corrugated Board Industry (Verband der Corrugiertpappenindustrie eV). For corrugated board solutions to comply with the standards, bursting strength, puncture resistance, and edge crush resistance, among other things, must meet certain values. The transport and storage system according to the invention therefore uses corrugated board, whereby the corrugated board is inserted perpendicular to the outer web, inner web, or intermediate web, and preferably inserted so that the flute also runs transversely. In technical jargon, this is referred to as vertical corrugated board. This is unusual in that, according to the standard, corrugated board is inserted so that the load rests on the inner or outer web.

[0039] Furthermore, the invention provides for combining the corrugated board into stacks of corrugated board, thus forming a composite or stack with at least two walls. However, a composite or stack with three walls, in particular with more than ten walls, and more preferably with more than twenty walls, can also be used. Surprisingly, however, it has been shown that a single- or double-wall corrugated board composite can already exhibit sufficiently high stability with a comparatively low dead weight.

[0040] According to the invention, the corrugated cardboard is also glued with adhesives that are not susceptible to fungal attack and, in particular, glued with adhesives that do not provide a breeding ground for conventional fungi or other microbes, such as glues, especially white glues, spray adhesives or hot melt glues.

[0041] In addition, the paper used to make the corrugated cardboard can also be antifungal.

[0042] In addition, an adhesive that does not dissolve under the influence of moisture is preferably used. A 24-hour water bath test can be performed for this purpose. In particular, the corrugated board is glued or bonded to ensure it is water-resistant.

[0043] In particular, the paper itself can be moisture-resistant and, in particular, feature a moisture-resistant binding. This may also be unnecessary if a high-quality kraft liner is used.

[0044] The transport and storage system according to the invention can be used in two variants. In the first variant, the corrugated cardboard forms a two- or three-point support for a coil. To create the two- or three-point support, the transport and storage system is designed from one or more modules.

[0045] When formed from a module, a triangular cross-section is cut out of a corrugated cardboard block. The opening of the triangular cutout is directed upwards and wider than the diameter of a coil.

[0046] In a multi-module design, the first modules are designed as triangles, specifically regular right-angled triangles, where the triangle's legs form a right angle between them. The corrugated cardboard is cut so that the base of the triangle corresponds to the cross-section of the flutes or corrugations.

[0047] These first modules support a coil at the triangular base, so that the coil rests linearly on each module. Two modules are arranged opposite each other, so that one leg rests on a floor and the other leg runs parallel to a side wall, for example, of a container or other means of transport. References to containers below also include all other possible transport systems, such as railway wagons or truck trailers.

[0048] Of course, the transport and storage system is also suitable for storing coils in the steelworks or at the customer's site.

[0049] Second modules can be provided, which, for example, are inserted as flat modules between a container wall and the parallel leg of the module. Thus, the different thicknesses of the second modules and thus the distance between the container wall and the parallel triangular leg, and thus the distance between the first modules from each other, and thus the opening for the coil formed by the two first modules, can be adjusted.

[0050] If necessary, the mutually facing tips, consisting of the base of the triangle and the leg resting on the floor, can be cut off to achieve an even closer distance. Third modules can also be provided, resting on the floor of a container, spanning the entire floor and supporting the first and second modules. These can, of course, also be made of single- or multi-wall corrugated cardboard.

[0051] If the first modules have capped tips, a fourth module can also be arranged between the capped tips, which runs elongated, for example over the entire length of a coil between the two first modules, and preferably ends flush with the capped edge of the triangular base.

[0052] As already described, the bases of the respective first modules can thus rest linearly on a coil, whereby both modules can extend over the full length of the coil or over a partial length of the coil. Furthermore, the coil can rest linearly on the fourth module as a third support point, so that the fourth module assumes a supporting function on the one hand and a spacing function on the other hand from the triangular first modules.

[0053] Instead of a continuous, flat design of the first modules, these modules can also extend only over a partial length of a coil and, for example, be arranged in alternating sequence, so that the modules alternate along the length of the coil and also alternately bear against the coil. This embodiment can also include a fourth module against which the first modules bear; however, with uncapped tips, the modules can also be arranged in an interlocking manner.

[0054] Preferably, the modules can extend over a total length of more than 20%, in particular more than 30%, particularly preferably more than 40% of the coil width. Coil width, as defined by the invention, is the extension of the coil along the longitudinal axis of the coil eye.

[0055] If multiple coils are stored in a container, corrugated cardboard spacers can also be arranged along the container end walls, i.e., the rear wall, extending across the entire or partial width of the container. Such elements can, of course, also be arranged between the coils, and thus also longitudinally between the first, second, third, and fourth modules. This also secures the coils longitudinally within the container.

[0056] The contact areas of the first modules on the coil should be selected so that the coil is held securely and does not change its position even when the container is moved. This is particularly the case if the contact areas are located at least above a quarter of the height of the lying coil, preferably a third of the height of the lying coil, in particular half the height of the lying coil.

[0057] In a further embodiment of the invention, the first modules are designed as blocks, wherein a cylinder sector shell wall is formed in the blocks, which is capable and designed to receive a part of the cylinder shell wall of the coil at least partially over its entire surface.

[0058] For this purpose, a corresponding section is cut out of, for example, a single cuboid-shaped corrugated cardboard block, with the radius of the coil to be picked up. However, it is also possible for the radius of the coil to be picked up to be only approximately incorporated into the corrugated cardboard block, for example, by means of an elliptical shape. The deviation can be set to a maximum of 100 mm, preferably a maximum of 50 mm, from the outer radius of the coil to be picked up. This advantageously allows coils of different sizes to be transported using the same corrugated cardboard blocks.

[0059] The recess created in this way opens upwards.

[0060] In principle, the recess in a module can also be elliptical instead of being rounded strictly to the radius of the coil. This creates a gap that opens upwards, but this can be filled with cardboard or anti-slip mats made of reusable rubber, for example. This advantageously allows slightly different coil diameters, particularly deviations of less than 10%, preferably less than 5% of the outer diameter, to be transported with the same module size. In particular, with an elliptical curvature of the support surface, the gap between the support surface and the coil shell wall can be filled with wedge-shaped fittings or rubber mats that are adapted to the elliptical surface on the one hand and the coil radius on the other.

[0061] The depth of the cutout is dimensioned such that a coil is stored in the cutout at least up to a quarter, in particular a third and in particular more than a third up to half of its diameter or more than half of the diameter.

[0062] Such a monolithic block is particularly suitable for storing coils in a particularly gentle manner between processing steps or before transport in the steelworks or before further processing at the customer's site.

[0063] Such a monolithic block can also be used for container transport and then has, for example, a width corresponding to the width of the container, a height corresponding to the desired height of the area of ​​the coil that is accommodated by the partially cylindrical opening in the block, in addition to a thickness that should exist between the container floor and the coil.

[0064] In addition, it is also possible that a monolithic corrugated cardboard block does not extend over the entire width of the container and, in this respect, the second modules described above are used to adjust the distance to the wall.

[0065] In a further embodiment, the corrugated cardboard block is not monolithically constructed, but is divided in particular in the middle, so that at least two first modules are formed, each of which accommodates, for example, a quarter of the circumference or less of a coil.

[0066] In a further embodiment, similarly shaped modules are manufactured which, for example, accommodate a quarter of the circumference of a coil or less and are arranged symmetrically opposite one another on both sides of the coil. For example, three modules can be created per side, which in total extend over at least 20%, preferably 40%, of the coil width. In this case, a heavy weight of the metal coil can advantageously be held securely and an efficient production method and simple handling are ensured by the two-piece modular design, i.e. the use of identical or similar modules, preferably connected with a plug-in system, which are arranged symmetrically on both sides around the coil. During the loading process, the second module can first be placed on the outside of the transport means wall and then a first module can be plugged into the second module.Finally, the coil to be transported is placed on the support surface of the first module(s).

[0067] For a coil diameter of, for example, 800 mm to 1800 mm, connected first and second modules can have a height of 600 mm to 1000 mm on the side that rests against the wall of the means of transport, i.e. the height of the second module, and a minimum height of 15 to 20 mm on the side of the first module that holds the coil. The width of the connected modules can be selected between 1100 mm and 1245 mm, so that they can advantageously be accommodated in a standard container with a width of around 2400 mm to 2500 mm and a gap of 10 mm to 100 mm remains between the modules arranged on both sides around the coil. This can make handling when inserting the modules easier, and on the other hand it can enable optimal force distribution across the floor of the means of transport so that no localized load peaks occur.The depth of the modules can vary depending on requirements, but is preferably selected between 100 mm and 300 mm to simplify handling and insertion into the transport vehicle, as well as to ensure sufficient stability. When using access areas for plug-in connection of the first and second modules, these access areas can preferably have a height of 100 mm to 250 mm, a width of 30 mm to 120 mm, and a depth of 1 mm to 100 mm, preferably 20 mm to 80 mm.

[0068] In addition, it may be provided to arrange the first modules at a distance from each other with a third module as already described, in which case the corresponding partial surfaces are coordinated to accommodate a coil and, in particular, amount to less than a quarter of the coil circumference to be accommodated. Of course, additional third modules can also be provided lying on the floor in this case.

[0069] To improve handling, the corrugated cardboard blocks can also be arranged in sections based on the length of a coil, so that across the entire length of a coil, i.e., across the so-called coil width, there are, for example, three corresponding first modules per side, for a total of six modules facing each other. In a preferred variant, these modules are assembled accordingly, consisting of first modules and second modules. Fifth modules can be arranged between these first modules, which space and secure these first modules longitudinally.

[0070] Tests have shown that corrugated cardboard which is loaded in the manner described, namely on the front edges running transversely to the corrugation, develops such a high level of stability that it is not necessary to support the metal coil over its entire surface.

[0071] With such subdivided first modules—this also applies to the first embodiment—labor law regulations regarding the maximum weight of blocks or weights to be manually handled can be easily complied with. This can advantageously allow handling by a single person. This can be achieved, as previously described, with a module depth of 100 mm to 300 mm, preferably 150 mm to 250 mm.

[0072] To further reduce weight, one embodiment can provide the modules with chamber-like, hollow sections. Such hollow sections are preferably punched-out areas located below the actual support surface. Multiple hollow sections can also be provided, forming a web-like or truss-like supporting structure between them. This can further improve handling. In particular, the weight is reduced, thus taking occupational safety into account. Particularly advantageously, such a cutout in the upper area of ​​the module can be shaped in the form of carrying handles; this can facilitate handling and save weight.Since cutting or punching out the corresponding recesses for a coil creates offcuts, this offcut, which ultimately takes on a pie-shaped shape, can easily be installed and combined to secure the coils lengthwise. Furthermore, such sections can also be used to space the first modules apart as fifth modules.

[0073] In general, i.e., in all the solutions described so far, it can also be provided that a recess is provided on the upper flank of the modules that rest against the container wall or transport vehicle wall, into which a force distribution element can be inserted to distribute any forces that may occur in the container wall. This force distribution element can be made of wood or corrugated cardboard, for example, and should preferably extend over the entire length of the container, especially when using multiple modules per coil side, in order to distribute any fluctuations during transport and the resulting lateral forces across the entire wall.

[0074] Since condensation often occurs in containers, it's best to use corrugated cardboard made of paper that's moisture-resistant, if possible. The same applies to the adhesive, which is also preferably waterproof.

[0075] To further protect the elements, it may be necessary to provide a simple layer of silicone paper or similar moisture-repellent material between the contact surfaces of the modules on the one hand and the coil on the other.

[0076] The invention is advantageous in that, surprisingly, corrugated cardboard, when loaded on its end faces, contrary to its usual use, exhibits a surprisingly high level of stability, sufficient to be used for a transport and storage system. Another advantage is that a sustainable storage system is used, which can be reused multiple times if necessary, but can also be easily recycled at the end of its useful life and thus be used endlessly. Even thermal recycling is possible, as it is a renewable raw material.The invention therefore relates in particular to a transport and storage system for metal coils for receiving, in particular horizontal, cylindrical metal sheet bundles, wherein at least a first and a second module are present, each of which is formed from a stack of corrugated cardboard, wherein the ceilings of the corrugated cardboard layers are oriented such that they run substantially perpendicular to a receiving surface for metal coils of the first module, wherein the second module has contact surfaces for contacting the first module and is designed for contact with the transport means wall, in particular the container wall.

[0077] A further development provides for the first module to engage into the second module in a tongue and groove or plug-in manner.

[0078] A further development stipulates that the height of the intervention area corresponds to more than 20%, in particular more than 30%, of the height of the second module. This advantageously ensures particularly good connection and transmission of forces.

[0079] A further development provides that the height of the engagement area corresponds to less than 30%, in particular less than 20%, preferably less than 10% of the height of the second module. This advantageously allows for simple and safe assembly and disassembly for reuse of the modules without risking damage to the modules or the engagement area. In a preferred embodiment, the engagement area can therefore have a height of 20% to 30% of the height of the second module.

[0080] A further development stipulates that the width of the intervention area corresponds to between 20% and 60% of the width of the second module.

[0081] A further training course stipulates that the depth of the intervention area corresponds to between 20% and 60% of the depth of the second module.

[0082] A further development provides for the first module to be made of a different grade of corrugated board than the second module. Advantageously, the first module has a higher grade of corrugated board than the second module. This ensures a longer service life of the first module and allows it to be reused more frequently. Furthermore, the quality requirements for the first module can be higher, as it has to bear the heavy coil load.

[0083] A further development provides that the module or modules are designed to extend in total over a length of more than 20%, in particular more than 30%, particularly preferably more than 40% of the coil width.

[0084] A further development provides for identically shaped first modules and identically shaped second modules, with the first and second modules differing in shape, to be arranged symmetrically opposite each other on both sides of the coil relative to a vertical plane through the coil's longitudinal axis. This can simplify the production of the modules and reduce the operating weight without compromising stability during transport.

[0085] A further development provides that at least one cylindrical body extends through the module and / or adjacent modules, directed from a receiving surface towards an outer surface.

[0086] A further development provides that the at least one cylindrical body is mounted in a bore in a form-fitting or press-fitting manner

[0087] A further development provides that the bore extends radially outwards with respect to the radius of a receiving surface or extends outwards at an angle to the radial.

[0088] A further development provides that the cylindrical body is designed as a solid cylinder or a hollow cylinder.

[0089] A further development provides for the cylindrical body to be made of metal, plastic, or cardboard. Cardboard can be advantageous as the base material, as it is an easily recyclable resource and is of the same type as the base material. A further development provides for the cylindrical body to extend continuously through the bore and form a positive fit with the respective surfaces of the module or modules, or in the region of the receiving surface, the cylindrical body is set back from the receiving surface by 1 mm to 100 mm, in particular 2 to 50 mm, preferably 2 to 20 mm, with a hollow space.

[0090] A further development provides for the cylindrical body to contact a bottom wall of a container or a supporting beam of an entire transport arrangement. This advantageously allows the force of the coil to be carried to be transferred into the floor or the supporting beams of the entire transport system.

[0091] A further development provides that several holes and several cylindrical bodies distributed around the circumference of the receiving surface penetrate the first module or the first and second modules.

[0092] A further development provides that the receiving surface of the first module is flat, so that the contact surface corresponds to a strip.

[0093] A further development provides that the receiving surface of the first module is concave or elliptically curved and is designed for partial, full-surface contact with a shell wall of a coil.

[0094] A further development provides that the corrugated cardboard used to form the modules or the stacks of corrugated cardboard or the corrugated cardboard and the stacks formed from it are glued together in a waterproof manner.

[0095] A further development stipulates that the material for the covers of the corrugated cardboard is a kraftliner.

[0096] A further development provides for the corrugated webs to be made of semi-pulp or kraft paper. A further development provides for the first and / or second module to have at least one hollow section. This hollow design allows for weight optimization while still ensuring sufficiently high stability and force absorption.

[0097] A further development provides that the first and / or second module has several hollow areas which form a web-like or truss-like supporting structure between them.

[0098] A further development provides that the ceilings and the corrugated layers are glued in a moisture-resistant and, in particular, waterproof manner.

[0099] A further development provides that the corrugated cardboard layers are combined to form corrugated cardboard stacks which are glued to one another over the surface via the covers, so that a composite or stack with at least two waves, in particular three waves, preferably more than ten waves and more preferably more than twenty waves is formed.

[0100] A further development stipulates that the material forming the corrugated board is moisture-resistant and / or fungicidal or bonded.

[0101] A further development provides that one or more first modules with their receiving surface and, if necessary, another first module form a two- or three-point support for a coil.

[0102] A further development provides that the first module has a triangular cross-sectional area which is cut out, wherein the mouth of the triangular cutout is directed upwards and is wider than a coil diameter.

[0103] A further development provides for at least two modules to be formed, which are triangular in cross-section and, in particular, are regular right-angled triangles in which the triangular legs form a right angle between them. A further development provides for two modules to be arranged opposite one another, so that one leg rests on a floor and a vertical leg, which forms a right angle with the leg, extends away from the floor.

[0104] A further development provides that the modules are triangular in cross-section and each extend only over a partial length of the coil and are arranged with their base walls offset from one another, so that broad sides lie against one another in some areas.

[0105] A further development provides that the tips of the triangular modules are cut off and the opposing triangular modules are thus arranged with vertical surfaces abutting one another.

[0106] A further development provides that modules (12) are in particular uniform, right-angled triangles in cross-section, in which the legs (13, 14) enclose a right angle.

[0107] A further development provides that the modules are supported directly or indirectly in a container wall with a first flat, upright leg and the module stands directly or indirectly on a container floor with a leg running at a right angle to this, wherein the base of the triangular module is formed with the concave or elliptically curved, cylinder segment-shaped support surface, which is formed adjacent to a casing wall of a coil, wherein the radius of the concave curved support surface corresponds to the outer radius of a coil or the elliptical curvature deviates by a maximum of 100 mm, in particular by a maximum of 50 mm, from the outer radius of a coil.

[0108] A further development provides that, in the case of an elliptical curvature of the support surface, the gap between the support surface and the coil casing wall is filled with wedge-like fitting pieces or recyclable rubber, such as anti-slip mats, which are adapted to the elliptical surface on the one hand and the coil radius on the other. A further development provides that the modules are spaced apart from one another in the region of the longitudinal center of the coil, in particular spaced apart by 1 mm to 100 mm, preferably 5 mm to 50 mm, with each support surface supporting a partial circumference of the casing wall of the coil, and the height of the modules is selected such that more than one-third and in particular more than half of the coil diameter is supported.

[0109] A further development provides that the first modules are spaced apart from one another in the region of the longitudinal center of the coil, in particular spaced apart by 1 mm to 100 mm, preferably 5 mm to 50 mm, with each support surface supporting a partial circumference of the coil's casing wall, and the height (H) of the first modules is selected such that more than a third, and in particular more than half, of the coil diameter is supported. The higher the support surface is selected, the better the forces can be dissipated and the more securely the coil can be held.

[0110] Adjusting the spacing of the first modules from each other can facilitate assembly and disassembly of the modules into a transport vehicle, as a certain distance from each other provides maneuvering clearance. This can be particularly advantageous for relatively large engagement areas. If the spacing is too large, the forces of the coil can no longer be optimally distributed and transferred to the floor of the transport vehicle. Therefore, adjusting the spacing from 1 mm to 100 mm, preferably 5 mm to 50 mm, can be advantageous.

[0111] A further development provides that a corrugated cardboard module is arranged between a container floor and a leg running parallel to the floor, which preferably extends from one container wall to the opposite container wall.

[0112] A further aspect of the invention relates to the use of waterproof bonded corrugated cardboard in transport and storage systems for metal sheet bundles. A further aspect of the invention relates to the use of corrugated cardboard treated with antifungal or bactericidal agents in transport and storage systems for metal sheet bundles.

[0113] A further aspect of the invention relates to the use of waterproof and / or anti-fungal adhesives for corrugated cardboard in transport and storage systems for metal bundles

[0114] Yet another aspect of the invention relates to the use of silicone paper as an intermediate layer between the modules and a coil to be stored thereon and as a cover for the areas not covered by a coil.

[0115] The invention is explained by way of example with reference to a drawing. Figure 1 shows the basic structure of a double-wall corrugated board;

[0116] Figure 2: a shaft with dimensions;

[0117] Figure 3: a single-wall corrugated board;

[0118] Figure 4: a double-wall corrugated board;

[0119] Figure 5: a triple-wall corrugated board; Figure 6: a coil in a transport and storage system according to the invention;

[0120] Figure 7: a transport and storage system according to the invention for various coils with different radii and the corresponding clearances for an elliptical receiving surface; Figure 8: a transport and storage system for an exemplary coil radius and the corresponding clearances for an elliptical receiving surface with rounded areas and corresponding shapes of wedge-shaped fitting pieces;

[0121] Figure 9: a transport and storage system for a coil with an inserted cylindrical body for stabilization;

[0122] Figure 10: a transport and storage system for a coil with two inserted cylindrical bodies for stabilization, with one cylindrical body passing through two modules;

[0123] Figure 11: a transport and storage system for a coil in plan view, with two nested module assemblies arranged symmetrically on both sides of the coil's longitudinal axis

[0124] Figure 1 shows the basic structure of a double-wall corrugated board. A first flute web 2 extends from an inner liner 1, which is a flat paper layer. Its flute tips 3 rest on the inner liner 1 and are glued to it.

[0125] On this corrugated sheet 2, an intermediate layer 4 rests, which is also a flat paper surface. On this intermediate layer 4, another corrugated sheet 5 rests, the height of which is lower and the distance (t) between the corrugation tips 3 is also smaller. An outer layer 6, which is also a flat paper sheet, is glued onto this corrugated sheet 5, resting on the corrugation tips 3.

[0126] The papers used for this purpose are well-known thick and tear-resistant papers, especially so-called kraftliner paper, at least on the outer sides, for additional stability and moisture protection.

[0127] The individual panels, such as the inner liner 1, the intermediate liner 4, and the outer liner 6, are waterproof-bonded to the corrugated panels 2, 5. According to the invention, it has been found that pure cornstarch adhesives are unsuitable for the inventive application of corrugated board, as they cannot withstand the climatic conditions, especially humidity, and can also provide a breeding ground for fungi. Adding resin to the cornstarch adhesive can significantly increase its resistance to moisture and fungal attack.

[0128] Figure 2 shows a wave path viewed from the front, showing the wave pitch (t) and wave height (h). The distance between two ulnar peaks is the wave pitch (t), and the distance between one wave trough and the next wave peak is the wave height (h).

[0129] In principle, single-, double- or multi-wall corrugated cardboard can be used, since according to the invention stacks are made up of several layers of corrugated cardboard that are glued together over the entire surface.

[0130] Typical flute combinations for double-walled boards according to the standard are BC flute, EB flute, or EE flute. For triple-walled corrugated boards, ACA, BAA, EBC, or BBC flute combinations are common. However, depending on requirements, any desired combination of the well-known flute types K flute, A flute, C flute, B flute, D flute, E flute, F flute, G flute, and N flute is possible.

[0131] Kraftliner is used as the cover material. Semi-cellulose or cellulose paper is used for the flute, although combinations are possible.

[0132] Depending on climatic conditions, these papers can also be moisture-resistant or biocidal or fungicidal. In particular, they can be fungicidal.

[0133] Figures 3, 4, and 5 essentially show the single-wall, double-wall, and triple-wall constructions. According to the invention, block-like modules are formed from stacks of corrugated cardboard. Combinations of triple-wall, double-wall, and single-wall corrugated cardboard are thus possible and desirable, and in particular, the exact width of the individual modules can be determined. The corresponding single-wall, double-wall, or triple-wall cardboards are placed on top of each other with their respective tops and glued together, so that, if necessary, in addition to the usual corrugated cardboard bonding in the single-wall, double-wall, or triple-wall construction, additional corrugated cardboards can be bonded together over the entire surface.

[0134] The adhesives used for corrugated board production can also be used here, and in particular, adhesives that are climate-, moisture-, and heat-resistant can be used. Mixtures of corn starch, glue with synthetic resins, and starch adhesives can be used to bond the individual sheets together.

[0135] Figure 6 shows a first embodiment of the transport and storage system 7. It shows a cylindrical coil 8, which can be seen from the end face 9 and has a central, hollow-cylindrical opening 10a centered around the longitudinal axis 10. This coil 8 has a shell wall 11. Modules 12 are arranged adjacent to the shell wall 11.

[0136] The modules 12 have an upright, substantially orthogonal leg 13 and a leg 14 resting on a container base 16, wherein the legs 13, 14 enclose a right angle.

[0137] The modules 12 are supported by a first flat, upright leg 13 on a cuboid-shaped second module 25.

[0138] The base 17 of the first module 12 is formed with a concave cylinder-segment-shaped or elliptically curved bearing wall 18, which rests against the shell wall 11 of the coil 8 and is preferably designed to bear against the shell wall 11 of the coil

[0139] 8. In particular, the radius of the concave, cylindrical segment-shaped, curved support wall corresponds to the outer radius of the coil 8. These modules 12 can be spaced apart from one another in the region of the longitudinal center 19 of the coil 8, wherein each support wall 18 supports a partial circumference of the casing wall 11 of the coil 8 and the height H of the modules 12 is selected such that preferably more than a third and in particular more than half of the coil diameter is supported.

[0140] The modules 12 are symmetrically positioned relative to the coil center.

[0141] The modules can each have recesses 20 in a leg 14 or a support surface (for modules 25) on a container floor 16, in which rails or wooden planks can be inserted for stabilization.

[0142] Furthermore, engagement areas 35 can be provided between modules 12 and 25. These are not shown in Figure 6.

[0143] Figure 7 shows a section through a transport and storage system according to the invention, wherein in this Figure 7 only the left half of the transport and storage system is shown to illustrate the principle. It can be seen that an elliptical shape for storing the coil 8 is introduced into the first module 12, which is suitable for transporting and storing different coil sizes, which differ slightly from one another, with the same first module 12. From the assembly, first the second module 25 is introduced into the transport means and then the first module 12 is inserted into the second module 25. This is preferably carried out in at least four positions in the transport means and then the coil 8 is applied to these first modules.

[0144] Figure 8 again shows a cross-section of half of a transport or storage system according to the invention, wherein a comparatively small coil 8 is used here. It can be seen here that a wedge-like fitting piece 33 is inserted to fill the free space between the elliptically shaped storage wall 18 and the coil 8. This fitting piece 33 supports the coil 8 and can, for example, be a recyclable rubber such as anti-slip mats or corrugated cardboard. The distance A between the elliptically shaped storage wall 18 and the coil's outer radius is set to a maximum of 100 mm, in particular a maximum of 50 mm. Figures 9 and 10 show further embodiments in which the corrugated cardboard is further stabilized.

[0145] Figure 9 shows a highly schematic section through a corrugated cardboard module 12 according to the invention and an adjacent module 25. For example, a layer of corrugated cardboard is formed on a receiving surface 18, but this layer may not necessarily function as a softer damping layer 29. A bore 30 extends through the module 12 beneath the damping layer 29. The bore can be directed radially outward relative to the radius of the receiving surface 18, 24, or extend outward at an angle to the radial. The bore 30 extends through the module 12.

[0146] A cylindrical or hollow cylindrical body 31, such as a tube or a sleeve, is preferably mounted in the bore.

[0147] The body 31 can be made of metal, plastic, or cardboard. Preferably, the body 31 is mounted in the bore 30 with a positive fit or a slight interference fit.

[0148] The body 31 can extend continuously through the bore 30 and also form a positive fit with the respective surface of the module 12. In the area of ​​the receiving surface 18, 24, the body 31 can also be slightly recessed with a cavity 32 from the bearing wall in order to maintain a safety distance in the event of deformation of the module 12, so as not to crush a coil 8.

[0149] The body 31 can also pass through several first modules 12 and one or more second modules 25 (Figure 10) and thereby connect them and introduce the force into both modules 12, 25 and from there to a bottom wall of a container or a supporting beam of an entire transport arrangement.

[0150] In this case, several holes 30 and several bodies 31 can also be distributed around the circumference of the receiving surface 18, 24. Particularly when the bodies 31 are made of cardboard or as a cardboard sleeve, the advantage is that the transport concept is formed from a single and, moreover, recyclable material.

[0151] Figure 11 shows a plan view of a transport and storage system for a coil arranged in a transport means, with two nested module assemblies consisting of modules 12 and 25 connected by the respective engagement areas 35, each arranged symmetrically on both sides of the coil's longitudinal axis. The coil 8 is arranged on the first module 12 or its support areas 18.

[0152] In some cases, for particularly heavy loads or special conditions, it may be necessary to provide a load distributor 34 on each side of the transport means walls to connect the respective second modules across the length of the transport means. This load distributor 34 can be made of wood, corrugated cardboard, or other materials. Preferably, this load distributor 34 is made of the same recyclable material as the second module 25.

[0153] Of course, the intervention areas can also be adapted so that they extend from the second module and engage the first module. Alternatively or additionally, multiple intervention areas can also be provided per module.

[0154] In order to achieve even greater protection against the effects of moisture in more extreme climatic conditions, particularly in tropical regions, the end surfaces of the corrugated cardboard, which are open due to the corresponding cuts, can also be covered with kraft liner paper or, in extreme cases, with silicone paper or similar water-repellent layers.

[0155] The advantage of the invention is that sustainable transport and storage systems are made from a sustainable raw material, which have a high load-bearing capacity and protect the stored goods.

Claims

Claims 1. Transport and storage system for metal coils for receiving, in particular horizontal, cylindrical bundles of metal sheet, wherein at least a first and a second module (12, 25) are present, each of which is formed from a stack of corrugated cardboard, wherein the ceilings (1, 4, 6) of the corrugated cardboard layers are oriented such that they run substantially perpendicular to a receiving surface (18, 24) for metal coils of the first module (12), characterized in that the second module (25) has contact surfaces for contacting the first module and is designed for contact with the transport means wall, in particular the container wall.

2. Transport and storage system according to claim 1, characterized in that the first module (12) engages in the second module (25) in a tongue and groove manner or in a plug-in manner.

3. Transport and storage system according to claim 2, characterized in that the height of the engagement area (35) corresponds to more than 20%, in particular more than 30%, of the height of the second module (25).

4. Transport and storage system according to claim 2, characterized in that the height of the engagement region (35) corresponds to less than 30%, in particular less than 20%, preferably less than 10% of the height of the second module (25).

5. Transport and storage system according to claim 2 or claim 3 or claim 4, characterized in that the width of the engagement area (35) corresponds to between 20% and 60% of the width of the second module (25).

6. Transport and storage system according to one of the preceding claims, characterized in that the first module (12) consists of a different corrugated cardboard quality, in particular higher corrugated cardboard quality, than the second module (25).

7. Transport and storage system according to one of the preceding claims, characterized in that the first and second modules (12, 25) extend in total over a a length of greater than 20%, in particular greater than 30%, particularly preferably greater than 40% of the coil width.

8. Transport and storage system according to one of the preceding claims, characterized in that similarly shaped first modules (12) and similarly shaped second modules (25) are arranged symmetrically opposite one another on both sides of the coil (8) with respect to a vertical plane through the coil longitudinal axis.

9. Transport and storage system according to one of the preceding claims, characterized in that at least one cylindrical body (31) extends through the module (12, 25) and / or adjacent modules (12, 25) directed from a receiving surface (18, 24) away from an outer surface.

10. Transport and storage system according to claim 9, characterized in that the at least one cylindrical body (31) is mounted in a bore (30) in a form-fitting or press-fitting manner.

11. Transport and storage system according to claim 10, characterized in that the bore (30) extends radially outwards with respect to the radius of a receiving surface (18, 24) or extends outwards at an angle to the radial.

12. Transport and storage system according to one of claims 9 or 10 or 11, characterized in that the cylindrical body (31) is solidly cylindrical or hollow cylindrical.

13. Transport and storage system according to one of claims 9 to 12, characterized in that the cylindrical body (31) is made of metal, plastic or cardboard.

14. Transport and storage system according to one of claims 9 to 13, characterized in that the cylindrical body (31) passes through the bore (30) and is in form-fitting contact with the respective surfaces of the module (12) or the modules (12, 20), or in the region of the receiving surface (18, 24) the cylindrical body (31) is set back by 1 to 100 mm, in particular 2 to 50 mm, in particular 2 to 20 mm, with a cavity (32) spaced from the receiving surface (18, 24).

15. Transport and storage system according to one of the preceding claims, characterized in that the cylindrical body (31) contacts a bottom wall of a container or a supporting beam or a rail of an entire transport arrangement.

16. Transport and storage system according to one of the preceding claims, characterized in that a plurality of bores (30) and a plurality of cylindrical bodies (31) distributed around the circumference of the receiving surface (18, 24) pass through the module (12, 20) and / or the modules (12, 20, 25).

17. Transport and storage system according to one of the preceding claims, characterized in that the receiving surface (24) of the module (20) is flat, so that the contact surface corresponds to a strip.

18. Transport and storage system according to one of the preceding claims, characterized in that the receiving surface (18) of the module (12) is concavely or elliptically curved and is designed to partially or fully engage a casing wall (11) of a coil (8).

19. Transport and storage system according to one of the preceding claims, characterized in that the corrugated cardboard for forming the modules (12, 20) or the stacks of corrugated cardboard or the corrugated cardboard and the stacks formed therefrom are glued together in a water-resistant manner.

20. Transport and storage system according to one of the preceding claims, characterized in that the material for the covers (1, 4, 6) of the corrugated cardboard is a Kraftli- ner and / or the corrugated webs (2, 5) are made of semi-cellulose or cellulose paper.

21. Transport and storage system according to one of the preceding claims, characterized in that the first module (12, 20) and / or second module (25) has at least one hollow, chamber-like region (28).

22. Transport and storage system according to one of the preceding claims, characterized in that the first module (12, 20) and / or second module (25) has a plurality of hollow regions (28) which form a web-like or truss-like supporting structure between them.

23. Transport and storage system according to one of the preceding claims, characterized in that the covers (1, 4, 6) and the corrugated layers are glued in a moisture-resistant and in particular waterproof manner.

24. Transport and storage system according to one of the preceding claims, characterized in that the corrugated cardboard layers are combined to form corrugated cardboard stacks which are glued to one another over the surface via the covers (1, 3, 6), so that an at least two-wave, in particular more than three-wave, preferably more than ten-wave and further preferably more than twenty-wave composite or stack is formed.

25. Transport and storage system according to one of the preceding claims, characterized in that the paper material forming the corrugated cardboard is treated or bound to be moisture-resistant and / or fungicidal.

26. Transport and storage system according to one of the preceding claims, characterized in that one or more modules (20) with their receiving surface (24) and optionally a further module form a two- or three-point support for a coil.

27. Transport and storage system according to one of the preceding claims, characterized in that the modules (12) are supported with a first flat, upright leg (13) directly or indirectly in a container wall (15) and with a leg (14) running at a right angle thereto, the module (12) stands directly or indirectly on a container floor (16), wherein the base (17) of the triangular module (12) is formed with the concavely or elliptically curved, cylinder-segment-shaped storage wall (18) which is formed so as to bear against a casing wall (11) of a coil, wherein the radius of the concavely curved storage wall (18) corresponds to the outer radius of a coil or the elliptical curvature of the storage wall (18) deviates by at most 100 mm, in particular by at most 50 mm, from the outer radius of the coil (8).

28. Transport and storage system according to one of the preceding claims, characterized in that in the case of an elliptical curvature of the storage wall (18), the gap between the storage wall (18) and the coil casing wall is filled with wedge-like fitting pieces (33) or recyclable rubber, in particular anti-slip mats (33), which are adapted to the elliptical surface on the one hand and the coil radius on the other hand.

29. Transport and storage system according to one of the preceding claims, characterized in that the modules (12) are spaced from one another in the region of the longitudinal center (19) of the coil (8), in particular spaced from one another by 1 mm to 100 mm, preferably 5 mm to 50 mm, wherein each support surface (18) supports a partial circumference of the casing wall (11) of the coil and the height (H) of the modules (12) is selected such that more than a third and in particular more than half of the coil diameter is supported.

30. Transport and storage system according to one of the preceding claims, characterized in that pieces (19) cut out of modules (12, 20) are arranged for load securing and spacing the modules (12) or coils (8) from one another.

31. Transport and storage system according to one of the preceding claims, characterized in that a corrugated cardboard module (28) is arranged between a container floor and a leg (14, 21) running parallel to the floor, which module preferably extends from one container wall (15) to the opposite container wall.

32. Use of a transport and storage system according to one of the preceding claims for rail, truck and sea transport or for storing metal bundles in buildings.

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